JPH022405B2 - - Google Patents
Info
- Publication number
- JPH022405B2 JPH022405B2 JP8446484A JP8446484A JPH022405B2 JP H022405 B2 JPH022405 B2 JP H022405B2 JP 8446484 A JP8446484 A JP 8446484A JP 8446484 A JP8446484 A JP 8446484A JP H022405 B2 JPH022405 B2 JP H022405B2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- molded
- injection molding
- mold
- molding method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001746 injection moulding Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、合成樹脂製成形品の射出成形法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an injection molding method for molded articles made of synthetic resin.
従来、合成樹脂製成形品は、第１図にみるよう
に、一対の金型１，２内で１個ずつ成形され、そ
の後単体の状態で後工程へ供給されていた。その
ため、組立て等の後工程において、
成形品を整列させる必要上成形品ごとにパー
ツフイーダを使用しなければならないので、ま
た、形状の複雑な成形品等はパーツフイーダに
はのらないことから人手に頼らなければならな
いので、コストアツプを招いた。
Conventionally, synthetic resin molded products have been molded one by one in a pair of molds 1 and 2, as shown in FIG. 1, and then supplied as a single unit to subsequent processes. Therefore, in post-processes such as assembly, a parts feeder must be used for each molded product to align the molded products, and molded products with complex shapes cannot be placed on the parts feeder, making it difficult to rely on human labor. This led to an increase in costs.
成形品に対してパーツフイーダが使用された
り、成形品が袋詰めされたりすることにより、
成形品が変形したり、損傷を受けたりする。 When parts feeders are used for molded products and molded products are packed in bags,
The molded product may be deformed or damaged.
成形品を一時的に収納する場合、パレツトや
袋が必要となるので、管理が大変である。 When temporarily storing molded products, pallets and bags are required, which is difficult to manage.
などが欠点が生じていた。There were some drawbacks.
そこで、この発明は、後工程時に生じるコスト
アツプを抑えることができ、成形品に変性や損傷
を生じさせることがなく、管理を容易にすること
ができる射出成形法を提供することを目的とす
る。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an injection molding method that can suppress cost increases that occur during post-processing, does not cause deterioration or damage to molded products, and can be easily managed.
発明者らは、上記の目的を達成するために鋭意
検討を重ね、この発明を完成した。
In order to achieve the above object, the inventors conducted extensive studies and completed this invention.
この発明は、一組の金型内で、成形品本体およ
び成形品同志間の接続部となる部分を一体的に成
形する工程と、この工程によつて得られた成形品
を金型内の他の部分に送る工程と、金型内の前記
他の部分で成形品の接続部同志を接続する工程と
がなされる射出成形法をその要旨とする。以下、
これを、その実施例をあらわす図面に基づいて詳
しく説明する。 This invention involves a step of integrally molding a molded product body and a connecting part between molded products in a set of molds, and a molded product obtained by this step in a mold. The gist thereof is an injection molding method that includes a step of sending the molded product to another part, and a step of connecting the connecting parts of the molded product in the other part in the mold. below,
This will be explained in detail based on drawings showing examples thereof.
第２図は、この発明にかかる射出成形法に使用
される装置をあらわす。この図にみるように、金
型３，４内には、成形品本体６および成形品５同
志間の接続部となる前部７と後部８とが一体的に
成形される成形型部９が設けられている。成形型
部９には後方から搬送装置１０の搬送ピン１１が
入つている。１２はスプルー、１３は成形品５を
成形型部９から押し上げるエジエクタピンであ
る。成形型部９よりも前方の金型３，４間には、
２個の成形品５，５を収めるスペースがあり、そ
れら成形品５，５の一方の前部７と他方の後部８
とを接続させるよう、両者の上方に、ばね１３の
下方への付勢を受けたポンチ１４が設けられてい
る。ポンチ１４よりも前方の金型３，４外部に
は、各前部７と各後部８同志が接続されて連続状
態になつた成形品連続体５′を金型３，４間から
外部へ取り出すよう、歯車１５と、この歯車１５
との間で前記成形品連続体５′を回動可能に支持
する支持ローラ１６とが設置されている。これら
歯車１５および支持ローラ１６のさらに前方に
は、前記成形品連続体５′を、搬送ベルト（図示
せず）とともに、鎖線で示すように巻き取る巻取
りリール（図示せず）が設けられている。 FIG. 2 shows an apparatus used in the injection molding method according to the invention. As shown in this figure, inside the molds 3 and 4, there is a mold part 9 in which the molded product main body 6 and the front part 7 and rear part 8, which are the connection parts between the molded products 5, are integrally molded. It is provided. A conveying pin 11 of a conveying device 10 is inserted into the mold portion 9 from the rear. 12 is a sprue, and 13 is an ejector pin for pushing up the molded product 5 from the mold portion 9. Between the molds 3 and 4 in front of the mold part 9,
There is a space to accommodate two molded products 5, 5, one front part 7 and the other rear part 8 of these molded products 5, 5.
A punch 14, which is biased downward by a spring 13, is provided above both to connect them. Outside the molds 3 and 4 in front of the punch 14, a continuous molded product 5' in which each front part 7 and each rear part 8 are connected to each other and is in a continuous state is taken out from between the molds 3 and 4. So, gear 15 and this gear 15
A support roller 16 for rotatably supporting the molded product continuous body 5' is installed between the molded product continuous body 5'. Further in front of these gears 15 and support rollers 16, there is provided a take-up reel (not shown) for winding up the continuous molded product 5' together with a conveyor belt (not shown) as shown by chain lines. There is.
つぎに、上記装置を用いた射出成形法について
説明する。まず、金型が閉じた状態で型内に溶融
樹脂が流入し、第３図にみるような成形品５が成
形される。成形品５は、成形品本体６とともに、
別の成形品との接続部となる前部７および後部８
も一体的に同時成形される。前部７はその下面に
凸部１７が成形されており、後部８は前記凸部１
７と嵌合する形状の孔１８が成形されている。後
部８には、第３図では示さないが、第７図にみる
ように、成形品５取り出し用のパイロツト孔１９
も成形されている。第３図にみるように、成形品
５の成形と同時に、その前方では既に出来ている
成形品同志５，５間の接続もなされる。つぎに、
第４図にみるように、金型３，４の両方が開くと
同時に、成形品５がエジエクタピン１２により突
き出される。この時、成形品後部８は、成形品成
形時よりずつと、搬送装置１０の搬送ピン１１に
支持された状態にある。そこで、第５図にみるよ
うに、成形後の成形品５が、伸張した搬送ピン１
１に支持され、成形型部９より前方の金型３，４
内の別の部分に送られる。同時に、成形品連続体
５′は、第２図に示す歯車１５により成形品１個
分金型外方向（前方）に送り出される。なお、送
り出された成形品連続体５′は、そのまま後工程
へ送られても良いし、リール等で巻き取られても
良い。他方、金型３，４内の別の部分に送られた
成形品５は、第６図にみるように、金型３，４の
型閉じ開始に伴い、ばね２０により常に上向きに
付勢されている成形品支持ブロツク２１に支持さ
れ、それにより、搬送ピン１１が後退する。その
後、金型３，４は、第３図にみるように、完全に
閉じられ、前記成形品５とそれ以前に既に出来て
いた成形品５との間で接続連結がなされるととも
に、溶融樹脂の射出成形による新たな成形品５の
成形がなされるのである。 Next, an injection molding method using the above apparatus will be explained. First, with the mold closed, molten resin flows into the mold, and a molded article 5 as shown in FIG. 3 is molded. The molded product 5, together with the molded product main body 6,
Front part 7 and rear part 8 which are connection parts with another molded product
are also integrally molded at the same time. The front part 7 has a convex part 17 formed on its lower surface, and the rear part 8 has a convex part 1 formed on its lower surface.
A hole 18 having a shape to fit with the hole 7 is formed. Although not shown in FIG. 3, the rear part 8 has a pilot hole 19 for taking out the molded product 5, as shown in FIG.
is also molded. As shown in FIG. 3, at the same time as the molded product 5 is formed, the connections between the molded products 5, 5 which have already been made in front of the molded product 5 are also made. next,
As shown in FIG. 4, when both the molds 3 and 4 are opened, the molded product 5 is ejected by the ejector pin 12. At this time, the rear part 8 of the molded product is in a state where it is supported by the conveying pins 11 of the conveying device 10, even when the molded product is being molded. Therefore, as shown in FIG.
1 and located in front of the mold part 9.
sent to another part within. At the same time, the molded product continuous body 5' is sent out (forward) by one molded product by the gear 15 shown in FIG. Note that the fed-out molded product continuous body 5' may be sent to a subsequent process as it is, or may be wound up on a reel or the like. On the other hand, as shown in FIG. 6, the molded product 5 sent to another part of the molds 3 and 4 is constantly urged upward by the spring 20 as the molds 3 and 4 begin to close. The conveyor pin 11 is supported by the molded product support block 21 which is located in the molded article support block 21, and thereby the conveyor pin 11 is retracted. Thereafter, the molds 3 and 4 are completely closed, as shown in FIG. A new molded product 5 is then molded by injection molding.
なお、連結されて成形品連続体を形成する成形
品は、必ずしも樹脂のみで成形された成形品に限
定されるものではなく、インサート部品を有する
成形品であつても構わない。 Note that the molded products that are connected to form a continuous molded product are not necessarily limited to molded products molded only from resin, and may be molded products that have insert parts.
実施例では、搬送ピンが成形品後部を支持する
ようになつていたが、搬送ピンによる成形品の支
持個所は上記個所に限られない。例えば、第７図
にみるように、成形品本体６の両側部に搬送ピン
（図示せず）に支持されるための溝２２が設けら
れていても構わない。しかし搬送ピンに支持され
る構造は上記のものに限られるものではなく、ピ
ン孔のようなものであつても良い。 In the embodiment, the conveyor pin supports the rear part of the molded product, but the position where the molded product is supported by the conveyor pin is not limited to the above-mentioned locations. For example, as shown in FIG. 7, grooves 22 may be provided on both sides of the molded product body 6 to be supported by conveyor pins (not shown). However, the structure supported by the conveyance pin is not limited to the above structure, and may be a structure such as a pin hole.
成形品の接続部の構造は、実施例では、接続部
の前部がその下面に凸部を有し、後部が凸部に対
応する孔を有する構造であつた。しかしながら、
このものに限られるわけではない。例えば、第８
図にみるように、前部２３に孔を形成して後部２
４の上面に凸部を形成した構造、第９図にみるよ
うに、前部２５下面の凸部２６が下方に向かつて
膨らんだ形状になつており、後部２７上面に前記
凸部２６に対応する凹部２８が形成されている構
造、第１０図や第１１図にみるように、前部と後
部が引き離される方向の力を受けても抜けないよ
うな鉤構造等がある。 In the example, the structure of the connection part of the molded product was such that the front part of the connection part had a convex part on its lower surface, and the rear part had a hole corresponding to the convex part. however,
It is not limited to this. For example, the 8th
As shown in the figure, a hole is formed in the front part 23 and the rear part 2
As shown in FIG. 9, a convex portion 26 on the lower surface of the front portion 25 is bulged downward, and corresponds to the convex portion 26 on the upper surface of the rear portion 27. As shown in FIGS. 10 and 11, there are structures in which a concave portion 28 is formed, and a hook structure that does not come off even if the front and rear parts are subjected to a force in a direction that separates them.
実施例では、接続部が成形品単体毎に成形され
ていた。しかし、第１２図にみるように、成形品
２９が２個分一度に成形され、２個取り成形品の
前部３０と後部３１にのみ接続部が形成されてい
るもの等、一度に多数成形される多数個取りの成
形品において、その前部と後部のみに接続部が形
成されていても構わない。 In the example, the connection portion was molded for each single molded product. However, as shown in FIG. 12, there are cases in which two molded products 29 are molded at once, and the connecting portions are formed only at the front part 30 and rear part 31 of the two-cavity molded product. In a multi-cavity molded product, the connecting portions may be formed only at the front and rear parts.
以上のように、この発明にかかる射出成形法
は、一対の金型内で、成形品本体および成形品同
志間の接続部となる前後部分を一体的に射出成形
する工程と、この工程によつて得られた成形品を
金型内の他の部分に送る工程と、金型内の前記他
の部分で成形品の接続部同志を接続する工程とが
なされるので、成形品が接続した形で金型内から
取り出されるようになつているため、後工程にお
いて、パーツフイーダが使用されたり、成形品が
袋詰めされたりすることがないので、後工程時に
生じるコストアツプを抑ええることができ、成形
品に変形や損傷を生じさせないという効果がもた
らされる。また、管理が容易になるという効果も
もたらされる。さらに、不良成形品を除去する場
合、他の成形品との接続を解除するだけで簡単に
除去できるので、一体成形、包含成形等による成
形品の溶融連結成形と比べて、全く手間がかから
ないという効果ももたらされるのである。
As described above, the injection molding method according to the present invention includes the step of integrally injection molding the main body of the molded product and the front and rear parts that serve as the connection between the molded products, and The molded product is then sent to another part of the mold, and the connected parts of the molded product are connected to each other in the other part of the mold. Since the parts are removed from the mold in the post-process, parts feeders are not used or the molded product is packed in bags, which reduces the cost increase during the post-process. This has the effect of not causing deformation or damage to the product. Moreover, the effect of easier management is also brought about. Furthermore, when removing a defective molded product, it can be easily removed by simply disconnecting it from other molded products, so compared to melt-connected molding of molded products using integral molding, inclusive molding, etc., it requires no effort at all. It also brings about effects.
第１図は従来の射出成形装置をあらわす断面
図、第２図はこの発明にかかる射出成形法に使用
される装置をモデル的にあらわす断面図、第３図
ないて第６図は第２図の装置を用いた射出成形法
の各工程を説明する断面図、第７図は第２図の装
置によつて得られる成形品の一例をあらわす部分
的平面図および部分的側面図、第８図および第９
図はそれぞれこの発明にかかる射出成形法におけ
る接続部の成形例をあらわす断面図、第１０図お
よび第１１図も前記同様に接続部の成形例をあら
わす平面図、第１２図はこの発明にかかる射出成
形法において成形された成形品の異なる成形例を
あらわす平面図である。
３，４…金型、５，２９…成形品、６…成形品
本体、７，２３，２５，３０…前部、８，２４，
２７，３１…後部、１４…ポンチ、１５…スプロ
ケツト、１７，２６…凸部、１８…孔、２８…凹
部。
FIG. 1 is a sectional view showing a conventional injection molding device, FIG. 2 is a sectional view showing a model of the device used in the injection molding method according to the present invention, and FIGS. 7 is a partial plan view and a partial side view showing an example of a molded product obtained by the apparatus shown in FIG. 2, and FIG. and the ninth
Each of the figures is a sectional view showing an example of forming a connection part in the injection molding method according to the present invention, FIGS. 10 and 11 are also plan views showing an example of forming a connection part in the same way as described above, and FIG. FIG. 3 is a plan view showing different examples of molded products molded by injection molding. 3, 4... Mold, 5, 29... Molded product, 6... Molded product body, 7, 23, 25, 30... Front part, 8, 24,
27, 31... Rear part, 14... Punch, 15... Sprocket, 17, 26... Convex part, 18... Hole, 28... Concave part.
Claims (1)
志間の接続部となる前後部分を一体的に射出成形
する工程と、この工程によつて得られた成形品を
金型内の他の部分に送る工程と、金型内の前記他
の部分で成形品の接続部同志を接続する工程とが
なされる射出成形法。 ２ 接続される接続部同志の一褒が凸部に成形さ
れ、他方が孔に成形される特許請求の範囲第１項
記載の射出成形法。 ３ 接続部で接続されて連続した成形品を前記金
型内から取り出す工程を含む特許請求の範囲第１
項または第２項記載の射出成形法。[Claims] 1. A step of integrally injection molding the molded product body and the front and rear parts that serve as connections between the molded products in a pair of molds, and a step of integrally injection molding the molded product obtained by this step. An injection molding method that includes a step of feeding the molded product to another part of the mold, and a step of connecting the connecting parts of the molded product in the other part of the mold. 2. The injection molding method according to claim 1, wherein one of the connecting portions to be connected is formed into a convex portion and the other is formed into a hole. 3. Claim 1, which includes the step of taking out a continuous molded product connected at a connecting part from the mold.
The injection molding method according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8446484A JPS60225724A (en) | 1984-04-25 | 1984-04-25 | Injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8446484A JPS60225724A (en) | 1984-04-25 | 1984-04-25 | Injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60225724A JPS60225724A (en) | 1985-11-11 |
| JPH022405B2 true JPH022405B2 (en) | 1990-01-18 |
Family
ID=13831344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8446484A Granted JPS60225724A (en) | 1984-04-25 | 1984-04-25 | Injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60225724A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729333B2 (en) * | 1986-03-28 | 1995-04-05 | ソニー株式会社 | Method of manufacturing resin case |
| JP3936615B2 (en) * | 2002-04-03 | 2007-06-27 | 株式会社大嶋電機製作所 | Injection molded body manufacturing apparatus and manufacturing method |
-
1984
- 1984-04-25 JP JP8446484A patent/JPS60225724A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60225724A (en) | 1985-11-11 |
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